1
0
mirror of https://github.com/cc65/cc65.git synced 2024-06-26 20:29:34 +00:00
cc65/libsrc/common/isspace.s

22 lines
336 B
ArmAsm
Raw Normal View History

;
; Ullrich von Bassewitz, 02.06.1998
;
; int isspace (int c);
;
.export _isspace
.include "ctype.inc"
_isspace:
cpx #$00 ; Char range ok?
bne @L1 ; Jump if no
tay
lda __ctype,y ; Get character classification
and #(CT_SPACE | CT_OTHER_WS) ; Mask space bits
rts
@L1: lda #$00 ; Return false
tax
rts